US20050129331A1
Expired / Lapsed
US
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Pupil color estimating device
Assignee: Omron Corp
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Filing: 2004-11-04
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Granted: —
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Expires: 2024-11-04
Abstract
Abstract An original pupil color of a subject person in an image in which an abnormality such as a red-eye or gold-eye occurs is estimated. Further, whether an image correction is required or not and to produce an image having a natural pupil color in the image correction by estimating the original pupil color from the image is judged. A pupil color estimating device has a skin color of a subject person specified from an inputted image, regardless of whether an abnormality such as a red-eye or gold-eye occurs. This skin color is substituted in an approximate equation based upon a statistical result carried out in advance, and thereby a normal color component of a pupil is estimated from the skin color of the subject person.
Inventors
- 👤 Takashi Kakiuchi
- 👤 Masahiro Senga
- 👤 Satoshi Hosoi
- 👤 Miki Matsuoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:43
CPC Classifications
G; G06; G06T; G06T7/00; G06T7/90; G06T2207/00; G06T2207/30; G06T2207/30216
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
61 words
1 . A pupil color estimating device comprising: a skin color specifying unit for specifying a skin color of a subject person in an inputted image; and a pupil color estimating unit for estimating a color of a pupil of the person that should be shown in the image based upon the skin color specified by the skin color specifying unit.
Claim 2
Dependent Claim
61 words
1 . A pupil color estimating device comprising: a skin color specifying unit for specifying a skin color of a subject person in an inputted image; and a pupil color estimating unit for estimating a color of a pupil of the person that should be shown in the image based upon the skin color specified by the skin color specifying unit.
Claim 3
Dependent Claim
100 words
2 . A pupil color estimating device comprising: a face detecting unit for detecting a face region including a part of a face or a whole face of a subject person in an inputted image; a skin color specifying unit for specifying a skin color of the person from a color of a pixel included in the face region detected by the face detecting unit; and a pupil color estimating unit for estimating a color of a pupil of the person that should be shown in the image based upon the skin color specified by the skin color specifying unit.
Claim 4
Dependent Claim
100 words
2 . A pupil color estimating device comprising: a face detecting unit for detecting a face region including a part of a face or a whole face of a subject person in an inputted image; a skin color specifying unit for specifying a skin color of the person from a color of a pixel included in the face region detected by the face detecting unit; and a pupil color estimating unit for estimating a color of a pupil of the person that should be shown in the image based upon the skin color specified by the skin color specifying unit.
Claim 5
Dependent Claim
91 words
3 . A pupil color estimating device claimed in claim 2 , further comprising: a pupil detecting unit for detecting a pupil region including a part of the pupil or whole pupil of the person detected by the face detecting unit; and a judging unit for judging whether an abnormality occurs on the color of the pupil of the person in the image by comparing the color of the pupil estimated by the pupil color estimating unit and a color specified from the pupil region detected by the pupil detecting unit.
Claim 6
Dependent Claim
59 words
4 . A pupil color estimating device claimed in claim 3 , wherein the judging unit judges whether the pupil section of the person in the image becomes a red-eye or not by comparing the pupil color estimated by the pupil color estimating unit and the pupil color specified from the pupil region detected by the pupil detecting unit.
Claim 7
Dependent Claim
74 words
5 . A pupil color estimating device claimed in claim 2 , further comprising: a pupil detecting unit for detecting a pupil region including a part of the pupil or whole pupil of the person detected by the face detecting unit; and a correcting unit for correcting the pupil color based upon the pupil color estimated by the pupil color estimating unit, with respect to the pupil region detected by the pupil detecting unit.
Claim 8
Dependent Claim
65 words
6 . A pupil color estimating device claimed in claim 3 , further comprising: a correcting unit that corrects the pupil color based upon the pupil color estimated by the pupil color estimating unit, with respect to the pupil region detected by the pupil detecting unit, in the case where it is judged by the judging unit that an abnormality occurs on the pupil color.
Claim 9
Dependent Claim
39 words
7 . A pupil color estimating device claimed in claim 5 , wherein the correcting unit makes a correction to the pixel in the pupil region detected by the pupil detecting unit with the brightness of the pixel maintained.
Claim 10
Dependent Claim
73 words
8 . A pupil color estimating device claimed in claim 2 , wherein the pupil color estimating unit estimates a pupil color based upon a correlation between a skin color and a pupil color, this correlation obtained based upon the result of a statistical process of a skin color and a pupil color obtained from an image including a subject person that is recognized to have no abnormality occurring on the pupil section.
Claim 11
Dependent Claim
50 words
9 . A program that causes an information processing device to execute: a step of specifying a skin color of a subject person in an inputted image; and a step of estimating a color of a pupil of the person based upon the skin color specified by the specifying step.
Claim 12
Dependent Claim
50 words
9 . A program that causes an information processing device to execute: a step of specifying a skin color of a subject person in an inputted image; and a step of estimating a color of a pupil of the person based upon the skin color specified by the specifying step.
Claim 13
Dependent Claim
76 words
10 . A program that causes an information processing device to execute: a step of detecting a face region of a subject person in an inputted image; a step of specifying a skin color of the person from a color of a pixel included in the face region detected in the detecting step; and a step of estimating a color of the pupil of the person based upon the skin color specified by the specifying step.
Claim 14
Dependent Claim
76 words
10 . A program that causes an information processing device to execute: a step of detecting a face region of a subject person in an inputted image; a step of specifying a skin color of the person from a color of a pixel included in the face region detected in the detecting step; and a step of estimating a color of the pupil of the person based upon the skin color specified by the specifying step.
Claim 15
Dependent Claim
56 words
11 . A pupil color estimating method comprising: a step in which an information processing device specifies a skin color of a subject person in an inputted image; and a step in which an information processing device estimates a color of a pupil of the person based upon the skin color specified by the specifying step.
Claim 16
Dependent Claim
56 words
11 . A pupil color estimating method comprising: a step in which an information processing device specifies a skin color of a subject person in an inputted image; and a step in which an information processing device estimates a color of a pupil of the person based upon the skin color specified by the specifying step.
Claim 17
Dependent Claim
87 words
12 . A pupil color estimating method comprising: a step in which an information processing device detects a face region of a subject person in an inputted image; a step in which an information processing device specifies a skin color of the person from a color of a pixel included in the face region detected in the detecting step; and a step in which an information processing device estimates a color of the pupil of the person based upon the skin color specified by the specifying step.
Claim 18
Dependent Claim
87 words
12 . A pupil color estimating method comprising: a step in which an information processing device detects a face region of a subject person in an inputted image; a step in which an information processing device specifies a skin color of the person from a color of a pixel included in the face region detected in the detecting step; and a step in which an information processing device estimates a color of the pupil of the person based upon the skin color specified by the specifying step.
Claim 19
Dependent Claim
94 words
13 . A pupil color estimating device claimed in claim 2 , further comprising: an approximate equation storing unit that stores an approximate equation, used for estimating a pupil color, so as to associate with a race; a race estimating unit that estimates the race of the subject person; and a selecting unit that selects the approximate equation stored in the approximate equation storing unit so as to associate with the estimated race, wherein the pupil color estimating unit estimates the pupil color based upon the specified skin color and using the approximate equation.
Claim 20
Dependent Claim
105 words
14 . A pupil color estimating device claimed in claim 2 , further comprising: an approximate equation storing unit that stores an approximate equation, used for estimating a pupil color, so as to associate with an environment; an environment estimating unit that estimates the environment in which this device operates or the environment in which the inputted image is captured, and a selecting unit that selects the approximate equation stored in the approximate equation storing unit so as to associate with the estimated environment, wherein the pupil color estimating unit estimates the pupil color based upon the specified skin color and using the approximate equation.
Claim 21
Dependent Claim
83 words
15 . An imaging device comprising: an imaging unit that captures an image; the pupil color estimating device as recited in claim 2; a pupil detecting unit for detecting a pupil region including a part of the pupil or whole pupil of the person detected by the face detecting unit; and a correcting unit for correcting the pupil color based upon the pupil color estimated by the pupil color estimating unit, with respect to the pupil region detected by the pupil detecting unit.
Claim 22
Dependent Claim
85 words
16 . A digital photo printer comprising: an image input unit for inputting an image; the pupil color estimating device as recited in claim 2; a pupil detecting unit for detecting a pupil region including a part of the pupil or whole pupil of the person detected by the face detecting unit; and a correcting unit for correcting the pupil color based upon the pupil color estimated by the pupil color estimating unit, with respect to the pupil region detected by the pupil detecting unit.
References Cited (Backward Citations)
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